Loading AI tools
来自维基百科,自由的百科全书
纬线和經線一樣是人類為度量方便而假設出來的輔助線,定義為地球表面某点随地球自转所形成的轨迹。任何一根纬线都是圆形而且两两平行。纬线的长度是赤道的周长乘以纬线的纬度的余弦,所以赤道最长,離赤道越远的纬线,周长越短,到了两极就缩为0。纬度表示南北方向的位置。
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.